Motorcycle Repair Questions? Ask a Mechanic ASAP

How JustAnswer Works:

Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.

Get a Professional Answer

Via email, text message, or notification as you wait on our site.Ask follow up questions if you need to.

100% Satisfaction Guarantee

Rate the answer you receive.

Ask Jeremy R Your Own Question

Jeremy R, Technician

Category: Motorcycle

Satisfied Customers: 9019

Experience: 20+ years experience. Factory trained and certified

8380480

Type Your Motorcycle Question Here...

Jeremy R is online now

I have a gsx750f 2000. It revs fully when not under load ,

Customer Question

I have a gsx750f 2000. It revs fully when not under load , but as I go up through the gearbox the maximum revs go down, I.e, 1st 10000,2nd 9000and so on till 6th 6500. I have changed the cdi but I am now stumped. Any ideas?

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

I apologize as we have not yet been able to find a Professional to assist you. Do you wish for me to continue to search for someone to assist you or would you like for us to close your question at this time?

Hi, I would like to try and help you with this.I don't usually answer these but saw just now you have been waiting quite a while.

So here's what you need to try.Get a squirt bottle with water, or windex or something NON flamable in it.Start the engine and do not rev it up.Let it come up to temperature. May take a few minutes.Then spray each header right next to the head where they come out and watch to see if one doesn't sizzle off as fast as the others.Rev it up if they're similar and do it again.One of them should be cooler than the others.An infared temp gun is a much better way to do this if you have one.The reason behind this could be one of three things that would need further investigation.Lack of spark, compression, or fuel to that one cold cylinder.Most of the time it's fouled spark plugs or dirty carbs that cause this.Sorry again that it took so long for someone to reply.Let me know if you need further assistance. I'll get an email with your replies and will get back to you as soon as I can.ThanksJeremy

Thank you Jeremy r for getting back, the next day that I can try your suggestions is Sunday due to work.it's 6.30am Wednesday here now. Hopefully I will get back to you with some positives.As the plugs are new, can I assume that fouled plugs could be iffy coils/connections ?

Well maybe. If the gas is old or there was alot of it in one cylinder for some reason it could be still a fouled plug.If not then yes coils, etc would be something next in line to look into.Whenever you can get back is fine. No rush.You'll probably get an automated email but disregard it. We'll follow up whenever you get to it.

What Customers are Saying:

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil

As a single woman, I really appreciate an excellent and affordable opinion. Thank you Geordie, I will not hesitate to contact justanswer in the future!Sue

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.Charles

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.Stephanie P

Ask a Motorcycle Mechanic

Get a Professional Answer. 100% Satisfaction Guaranteed.

57 Motorcycle Mechanics are Online Now

Type Your Motorcycle Question Here...

characters left:

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.